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Finding the Fourth Proportional to 505,012.37, 697,840.86 and 480,411.05

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Solution

The fourth proportional to 505,012.37, 697,840.86 and 480,411.05 is: 663,846.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    505,012.37 : 697,840.86 = 480,411.05 : x
  2. Step 2: Convert to fraction form
    505,012.37/697,840.86 = 480,411.05/x
  3. Step 3: Cross multiply
    505,012.37x = 697,840.86 × 480,411.05
  4. Step 4: Simplify right side
    505,012.37x = 335,250,456,796.30
  5. Step 5: Solve for x
    x = 335,250,456,796.30/505,012.37
  6. Step 6: Final answer
    x = 663,846.04

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.